1. (a) A Singleton set contains
(i) Zero element (ii) One element
(iii) Infinite elements (iv) None of these
(b) A-mB is equals to
(c) Which of following is not an operation on sets:—
(i) Union (ii) Intersection (iii) Complement (iv) None of these (d) sec c is inverse of which of following
(i) sin a (ii) cos a (iii) cot a (iv) see a
(e) cosec a is inverse of ______________

(0 (x + a )1O has following number of terms
(i) 10 (ii) 11 (iii) 12 (iv) 9
(g) Transpose of a symmetric matrix A is
(h) Determinant of a skew-symmetric matrix A is
(i) If two rows of a determinant are exchanged. new determinant will be
(i) Same (ii) Negative (iii) Doubles (iv) None of these
(j) Row matrix has
(k) Mean of first five natural number is :
(i) 1 5 (ii) 10 (iii) 1 2 (iv) None of these
(1) Mode of sequence 1,2,2,2,3,3,4 is
(m) Median of sequence 1.234.5 is
(n) Transpose of a skew symmetric matrix A is
(i) A (ii) —A (iii) 2A (iv) None of these.